Forensic evidence record · ev-al0000943-f-guntersville-sb-pfhxa
Perfluorohexanoic acid (PFHxA)
A single published measurement record with its qualifier, sampling context, source identifier, method note, and stated limitations kept together.
Published evidence record
8.7 ng/LReported measurementSource observations (10)
- PFHxA — Sample date: 2023-12-13
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample GL02642-01 · Method EPA 533
- PFHxA — Sample date: 2024-03-04
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample HC00532-01 · Method EPA 533
- PFHxA — Sample date: 2024-06-12
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample HF02505-01 · Method EPA 533
- PFHxA — Sample date: 2024-09-16
Detected above reporting limit. = 0.0036 µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample HI03020-01 · Method EPA 533
- PFHxA — Sample date: 2024-01-02
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample HA00178-01 · Method EPA 533
- PFHxA — Sample date: 2024-06-12
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample HF02498-01 · Method EPA 533
- PFHxA — Sample date: 2023-12-27
Detected above reporting limit. = 0.0087 µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample GL04501-03 · Method EPA 533
- PFHxA — Sample date: 2024-03-04
Detected above reporting limit. = 0.0036 µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample HC00532-03 · Method EPA 533
- PFHxA — Sample date: 2024-06-12
Detected above reporting limit. = 0.0036 µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample HF02505-03 · Method EPA 533
- PFHxA — Sample date: 2024-09-16
Detected above reporting limit. = 0.0032 µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample HI03020-03 · Method EPA 533
Measurement evidence
- Analyte
- Perfluorohexanoic acid (PFHxA)
- Result qualifier
- =
- Reference basis
- 400000.0 ng/L Michigan EGLE state MCL (strictest US state)
- Sampling location
- Entry Point to Distribution
- Water system ID
- AL0000943
- Source ID
- src-ucmr5-2024
Laboratory context
No laboratory method note was published with this record.
Sampling context
This result represents a entry point to distribution sample. It does not establish the condition at every distribution point or household tap.
Record limitation
System-level entry-point monitoring; not a measurement of the water at an individual household tap.
Source provenance
UCMR5 Analytical Results
Fifth Unregulated Contaminant Monitoring Rule (UCMR5) — PFAS occurrence data
U.S. Environmental Protection Agency · Published 2024
Nationwide entry-point monitoring for 29 PFAS and lithium under the fifth UCMR cycle. Results are entry-point-to-distribution samples, not household-tap measurements.
How to interpret this record
This page preserves one measurement. Interpretation requires its qualifier, reporting limit, reference basis, date, sampling location, and limitations; the number alone is not a safety verdict.
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